Abstract：The integrating equation theory as an important part of radiation theory for blackbody cavity and its development are reviewed.A new type of design for blackbody cavity is presented.The cavity possesses with a double layer structure which is connected to liquid bath to keep the fluid flows in a circle in it.This structure greatly improves isothermal condition around blackbody cavity.A high radiation and heatproof coating is used for inner wall of the cavity, which has very good diffuse radiation characteristics. The effective emissivity of the designed blackbody cavity is up to 0.998.
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2011, Vol. 32 
